distribute and combine like terms

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Variable

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a term that contains a letter

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-3x+15, 15-3x

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Front

In math class, the word constant refers to:

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a term that contains no letters

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-18x+7, 7-18x

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In math class, the word distribute refers to:

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multiplication and division

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8x-4

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-42x+59, 59-42x

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In math class, the word combining refers to:

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addition and subtraction